I'm making a model in Blender and try to export it as collada file. This step goes well, but there are problems with the hair, eyes and eyebrows locations. As you see in the picture above the hair, eyes and eyebrows are positioned lower than what they are positioned pre-export.
I've attached the eyes, eyebrows and hair to the head bone and they move well when animating the model. It only happens after I export it. I don't know whether it's wrong to attach them to the top bone.